1 files changed, 0 insertions, 70 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 51c4edd07659..708388063a6b 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1529,76 +1529,6 @@ static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
 	}
 }
 
-static bool ath9k_hw_check_dcs(u32 dma_dbg, u32 num_dcu_states,
-			       int *hang_state, int *hang_pos)
-{
-	static u32 dcu_chain_state[] = {5, 6, 9}; /* DCU chain stuck states */
-	u32 chain_state, dcs_pos, i;
-
-	for (dcs_pos = 0; dcs_pos < num_dcu_states; dcs_pos++) {
-		chain_state = (dma_dbg >> (5 * dcs_pos)) & 0x1f;
-		for (i = 0; i < 3; i++) {
-			if (chain_state == dcu_chain_state[i]) {
-				*hang_state = chain_state;
-				*hang_pos = dcs_pos;
-				return true;
-			}
-		}
-	}
-	return false;
-}
-
-#define DCU_COMPLETE_STATE        1
-#define DCU_COMPLETE_STATE_MASK 0x3
-#define NUM_STATUS_READS         50
-static bool ath9k_hw_detect_mac_hang(struct ath_hw *ah)
-{
-	u32 chain_state, comp_state, dcs_reg = AR_DMADBG_4;
-	u32 i, hang_pos, hang_state, num_state = 6;
-
-	comp_state = REG_READ(ah, AR_DMADBG_6);
-
-	if ((comp_state & DCU_COMPLETE_STATE_MASK) != DCU_COMPLETE_STATE) {
-		ath_dbg(ath9k_hw_common(ah), RESET,
-			"MAC Hang signature not found at DCU complete\n");
-		return false;
-	}
-
-	chain_state = REG_READ(ah, dcs_reg);
-	if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
-		goto hang_check_iter;
-
-	dcs_reg = AR_DMADBG_5;
-	num_state = 4;
-	chain_state = REG_READ(ah, dcs_reg);
-	if (ath9k_hw_check_dcs(chain_state, num_state, &hang_state, &hang_pos))
-		goto hang_check_iter;
-
-	ath_dbg(ath9k_hw_common(ah), RESET,
-		"MAC Hang signature 1 not found\n");
-	return false;
-
-hang_check_iter:
-	ath_dbg(ath9k_hw_common(ah), RESET,
-		"DCU registers: chain %08x complete %08x Hang: state %d pos %d\n",
-		chain_state, comp_state, hang_state, hang_pos);
-
-	for (i = 0; i < NUM_STATUS_READS; i++) {
-		chain_state = REG_READ(ah, dcs_reg);
-		chain_state = (chain_state >> (5 * hang_pos)) & 0x1f;
-		comp_state = REG_READ(ah, AR_DMADBG_6);
-
-		if (((comp_state & DCU_COMPLETE_STATE_MASK) !=
-					DCU_COMPLETE_STATE) ||
-		    (chain_state != hang_state))
-			return false;
-	}
-
-	ath_dbg(ath9k_hw_common(ah), RESET, "MAC Hang signature 1 found\n");
-
-	return true;
-}
-
 void ath9k_hw_check_nav(struct ath_hw *ah)
 {
 	struct ath_common *common = ath9k_hw_common(ah);